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    • 5. 发明申请
    • Optical scanning apparatus
    • 光学扫描装置
    • US20060023056A1
    • 2006-02-02
    • US11192180
    • 2005-07-29
    • Yoichi SuzukiTadashi MasudaYoshinori MorimotoKenichi Saito
    • Yoichi SuzukiTadashi MasudaYoshinori MorimotoKenichi Saito
    • B41J2/385
    • G02B5/205B41J2/471G02B26/124
    • The optical scanning apparatus includes a light amount reducing filter such as a neutral density filter which has transmittance ηnd satisfying an expression ηnd=(W1/W0)/(ηAOM×ηref×ηtra) and a light amount reducing function using absorption or reflection and which is disposed between a laser light source and an AOM on an optical path of laser light beam. In the expression, W0 denotes the amount of light emitted from the laser light source, W1 denotes the amount of light required for recording on a recording medium, ηAOM denotes diffraction efficiency in the AOM, ηref denotes a sum of reflectances of reflective optical elements located between the laser light source and a surface to be scanned, of the recording medium, and ηtra denotes a sum of transmittances of transmissive optical elements located between the laser light source and the surface to be scanned, other than transmittance of the neutral density filter.
    • 光学扫描装置包括一个光量减少滤光器,例如中性密度滤光片,其具有满足表达式η(N)的透光率η(< 1< 1< 使用吸光度的光量减少函数和/或/ 或反射,并且其设置在激光光束的光路上的激光源和AOM之间。 在表达式中,W 表示从激光源发射的光的量,W 1表示在记录介质上记录所需的光量,eta 表示AOM中的衍射效率,η表示记录介质中位于激光光源和待扫描表面之间的反射光学元件的反射率之和,以及 eta 表示除了中性密度滤光器的透射率之外,位于激光光源和待扫描表面之间的透射光学元件的透射率之和。
    • 6. 发明授权
    • Optical scanning apparatus
    • 光学扫描装置
    • US07355615B2
    • 2008-04-08
    • US11192180
    • 2005-07-29
    • Yoichi SuzukiTadashi MasudaYoshinori MorimotoKenichi Saito
    • Yoichi SuzukiTadashi MasudaYoshinori MorimotoKenichi Saito
    • B41J2/47B41J2/385
    • G02B5/205B41J2/471G02B26/124
    • The optical scanning apparatus includes a light amount reducing filter such as a neutral density filter which has transmittance ηnd satisfying an expression ηnd=(W1/W0)/(ηAOM×ηref×ηtra) and a light amount reducing function using absorption or reflection and which is disposed between a laser light source and an AOM on an optical path of laser light beam. In the expression, W0 denotes the amount of light emitted from the laser light source, W1 denotes the amount of light required for recording on a recording medium, ηAOM denotes diffraction efficiency in the AOM, ηref denotes a sum of reflectances of reflective optical elements located between the laser light source and a surface to be scanned, of the recording medium, and ηtra denotes a sum of transmittances of transmissive optical elements located between the laser light source and the surface to be scanned, other than transmittance of the neutral density filter.
    • 光学扫描装置包括一个光量减少滤光器,例如中性密度滤光片,其具有满足表达式η(N)的透光率η(< 1< 1< 使用吸光度的光量减少函数和/或/ 或反射,并且其设置在激光光束的光路上的激光源和AOM之间。 在表达式中,W 表示从激光源发射的光的量,W 1表示在记录介质上记录所需的光量,eta 表示AOM中的衍射效率,η表示记录介质中位于激光光源和待扫描表面之间的反射光学元件的反射率之和,以及 eta 表示除了中性密度滤光器的透射率之外,位于激光光源和待扫描表面之间的透射光学元件的透射率之和。